Single axis sensor, on/off toggle switch. One fresh 9V battery required. Useful for preliminary surveys of home, car, or office. Very popular for paranormal work too!

What this meter lacks in resolution it makes up with ease of use and very low cost. Will measure ELF/VLF magnetic fields in the frequency range of 20 - 10,000 Hz, with a minimum sensitivity of .25 mG. Laboratory tested and documented for accuracy.